Carburetor



H. RYKER CARBURETOR Dec. 22, 1931.

Filed April 10 1931 4 Sheets-Sheet 2 Inventor H. RYKE R CARBURETOR Dec. 193 1 Filed April 10, 1931 4 Sheets-Sheet 4 Inventor dog.

Patented Dec. 22, 1931 UNITED STATES PATENT OFFICE nanny nYkEa, or mnmnnronrsQmn-mnn, Assren'on 'ro THE mama easrrmn comrm, INCORPORATED, or rnnmnnnoms nmnim, A ooaronn'rron CARBURETOR Application filed April 10,

The present invention pertains to carburetors of the general type forming the subject matter of my co-pending application which bears Serial Number 495,998, filed by me on November 15, 1930, and upon which the present invention constitutes an improvement.

An important object of the invention is to provide, in a. manner as hereinafter set forth, a carburetor of the character described embodying a novel construction and arrangement of parts for mixing with fuel charge a portion of the exhaust gases from the engine, the invention further contemplating a novel means for moistening the exhaust gases before the same are incorporated in the fuel charge, thereby materially increasing the efliciency of the engine and reducing the cost of operating the same.

Another important object of the invention is to provide a carburetor of. the character described embodying means for utilizing the heat of the exhaust gases which are introduced into the fuel charge for heating said fuel charge prior to its passage into the engine.

Other'objects of the invention are to provide a carburetor of the aforementioned character which will be simple in construction, strong, durable, efiicient and reliable in use and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection v with the accompanying drawings wherein like characters of reference designate corresponding parts through the several views, and wherein Figure 1 is a view in vertical longitudinal section through a carburetor constructed in accordance with the present invention.

Figure 2 is a view in top plan of the lower portion of the carburetor.

Figure 3 is a view in bottom plan of the upper portion of the carburetor. Figure 4 is a detail view in horizontal cross section of the water control valve.

Figure 5is a detail view in vertical section 1931. Serial N0. 529,174.

showing the water inlet and control valve I therefor.

Figure 6 is a detail view in verticalsection showing the exhaust gas control valve. 1

Figure 7 is a detail view in top plan showin the outlet pipe or tube and the throttle va ve therein.

Figure 8 is a detail view partially in eleva-' tion and partially broken away in vertical section of the pipe which connects theexhaust gas control valve with the exhaust gas et.

Figure 9 is a detail view in elevation of the water control valve.

Figure 15 is a detail. view in vertical section through the device illustrated in Figure 14.

Referring to the drawings in detail, it will be seen that the reference numeral 1 designates generally a casing comprising the upper and lower sections 2 and 3, respectively,

aving their abutting ends externally flanged and detachably bolted together, as at 4.

Incorporated in the lower section 3 of the casing 1 is a conduit which is substantially in the form of an elbow which is designated 7 generally by the reference numeral 5 and which comprises the arms or branches 6 and 7, the branch 6 constituting an air intake and having operatively mounted therein a choke valve 8. The upstanding or vertical branch 7 of the elbow 5 is provided with an enlarged free end portion 9 for the reception of the lower end ortion of a tube 10 which extends through tihe closed upper end of the upper section 20f the casing and terminates in an externally threaded free upper end portion 11 for connection through the medium of any suitable type -of coupling (not shown) with the intake manifold of an internal combustion engine. A throttle valve 12 is operatively mounted in an upper portion of the tube 10 and is provided with an operating arm 13. 1

The casing 1 provides a water chamber into the lower section 3 of which water from the cooling system from the engine is applied to the desired level through the inlet 14 (see Figures 4 and 5) having a valve seat member 15 at its inner end with which a needle valve 16 is engageable, said needle valve 16 being 0 rable in a vertically elongated chamber 1 provided therefor in one side of the section 3 and being operatively connected with a segmental float 18 which is mounted for operation in the section 3 of the casing. A headed pivot pin 19 is threaded into the section 3 and extends through the apertured ears .20 which are provided therefor, the flat 18 being pivoted on the pin 19 between the ears 20.

A perforated bafile plate 21 encircles the tube 10 and rests on the upper end of the branch 7 of the elbow 5, the outer marginal portion of said baflie plate being clamped between the sections 2 and 3, said sections being recessed for the reception of the baflie plate. An exhaust gas supply pipe 22 extends downwardly into the casing 1 from the upper end thereof through the bafile plate 21 and has its lower or discharge end submerged into water in the casing and spaced from the bottom of said casing. A suitable conduit 23 connects the upper end of the pipe 22 with the exhaust manifold of the engine.

The casing 1 is further provided with a safety valve 24 to prevent building up of excessive pressure in the casing. The reference numeral 25 designates a drain cock in the bottom of the casing.

A float chamber 26 is provided on the lower portion of one side of the casing and has an inlet passage 27 which is controlled by a needle valve 28 which, in turn, is actuated in the usual manner by a float 29 which is operable in the chamber 26. The inlet passage 27 of the float chamber 26 is connected 'in the usual manner to the fuel tank.

The lower section 3 of the casing 1 has formed integrally therein a boss 30 which extends into the elbow 5 and which is provided with a reduced lateral extension into which the gasoline jet or nozzle 31 is threaded. Fuel from the chamber 26 passes to the nozzle 31 through the passage 32 which is controlled by the manually operable regulating needle valve 33. The boss 30 is further provided with an acute angle bore 34 having an exhaust gas discharge nozzle 35 threaded into one end portion thereof and disposed adjacent the free end of the nozzle 31. A pipe 36 is disposed vertically in the casing 1 and extends through the bafile plate 21, said pipe 36 havmg its lower end portion threaded into the ot er end portion of the bore 34, the upper end portion of the pipe 36 extending through the upper end of the casing 1 and being coupled by an angular connection 37 with a valve casing 38 having a passage therein communicating with the casing 1, said passage being designated by the reference numeral 39 and being controlled by the needle valve 40 which is manually adjustable.

A substantially frusto-conical perforated atomizer and mixer 41 is mounted centrally in the upstanding branch 7 of the elbow 5 over the discharge ends of the nozzles 31 and 35 through the medium of the radiating arms 42 whichextend to the supporting annulus 43 which, in turn, rests on the internal flange 44 of the branch 7.

The boss 30 is also provided with a vertical passage 45 having its lower end communicat ing with the fuel passage 32. A by-pass ipe 46 has its lowerend portion threaded or ot erwise secured in the upper end portion of the passage 45, said pipe 46 extending vertically in the branch 7 of the elbow 5 and the tube 10 and terminating, at its upper end, at a point above the throttle valve 12 when said throttle valve is in its closed position. The throttle valve 12 is notched for the reception of the pipe 46 and the annulus 43 is provided with a passage 47 (see Figure 14) for the passage of said pipe 46. a

In operation, airv enters the carburetor through the branch-6 of the elbow 5 and passes upwardly through the branch 7 of said elbow. Gasoline or other fuel which is supplied to the float chamber 26 is discharged upwardly from the nozzle 31, said fuel, as before set forth, assing from the float chamber to the nozz e through the passage 32. Exhaust gases from the exhaust manifold of the enginepass downwardly into the easing 1 through the pipe 22 and are discharged into the water in the lower section 3 of the casing The exhaust gases heat or warm the water and are impregnated or moistened thereby. The exhaust gases rise from the water and ass upwardly through the perforated bei e plate 21 into the upper portion of the casing 1 from which a portion of said exhaust gases pass into the pipe 36 through the needle valve regulated passage 39 and the angular connection 37, as will be understood. The exhaust gases pass donwardly through the pipe 36 into the acutely angle bore 34 of the boss 30 and are discharged upwardly against the atomizer or mixer 41 from the nozzle 35. The air, fuel and exhaust gases arethoroughly mixed and atomized by the elements 41 and pass upwardly into the intake manifold of the en It is believed that the many advantages of a carburetor constructed in accordance with the present invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes casing having a horizontal branch and a vertical branch, said horizontal branch communicating with the atmosphere and constituting an air intake, the vertical-branch being spaced inwardly from the casing and surrounded by the water, nozzles directed upwardly in the vertical branch of the elbow, means for supplying fuel to one of the nozzles, a pipe extending downwardly into the water from an upper portion of the casing, means connecting the pipe to the exhaust manifold of the engine in a manner to receive exhaust gases therefrom and to discharge said exhaust gases into the water, a pipe hav-' ing one end in communication wi an upper portion of the casing to receive the ex haust gases therefrom and its other end in communication with the other nozzle for discharging the exhaust gases therethrough into the vertical branch of the elbow, and

means for connecting the vertical branch of the elbow to the intake manifold of the enine.

b 2. A. carburetor for an internal combustion engine comprising a casing for the reception of water, means for controlling the flow of water into the casing, an elbow in the casing having a horizontal branch and a vertical branch, said horizontal branch communicating with the atmosphere and constituting an air intake, the vertical branch being spaced inwardly from the casing and surrounded by the Water, nozzles directed upwardly in the vertical branch of the elbow, means for supplying fuel to one of the nozzles, a pipe extending downwardly into the water from an upper portion of the casing, means connecting the pipe to the exhaust manifold of the engine in a manner to, receive exhaust gases therefrom and to discharge said exhaust gases into the water, a pipe having one end in communication with an upper portion of the casing to receive the exhaust gases therefrom and its other end in communication with the other nozzle for discharging the exhaust gases therethrough into the vertical branch of the elbow, and means for connecting the vertical branch of the elbow to the intake manifold of the engine, a perforated baflie plate mounted in an intermediate portion of the casing in spaced relation above the water therein, and a perforated, substantially frusto-conical member mounted in the vertical branch of the elbow above the nozzles for atomizing and mixin the air, fuel and exhaust gases.

- 3. A car uretor for an internal combustion engine comprising a casing for the reception of water, a float operated valve for controllingthe flow of the water into the casing, an elbow in the lower portion of the casing having a vertically disposed branch spaced concentrically from the side walls of the casing and terminating in an intermediate portion of saidcasing, said elbow further having a horizontally disposed branch communicating with the atmosphere and constituting an air intake for the carburetor, a pipe for connection to the intake manifold of the engine extending downwardly into the casing from the upper end thereof and having its lower end connected with the elbow, a perforated baffle plate mounted on the verticalbranch of the elbow in spaced relation I above the water in the casing, a boss in the lower portion of the casing having passages therein, nozzles communicating with certain of the passages and extending upwardly therefrom into the vertical branch of the el bow, valve controlled means for supplying fuel to one of the nozzles, a pipe extending downwardly into the casing from the upper end thereof and having its lower end submerged in the water, means for connecting the pipe to the exhaust manifold of the engine to supply exhaust gases'thereto, said pipe discharging the exhaust gases into the water, another pipe having communication with the other nozzle and extending upwardly through the upper end of the casing, valve controlled means connecting the upper end of the last named pipe with the interior of the casing in a manner to receive exhaust gases from said casing and for discharging said exhaust gases through the other of the nozzles into the vertical branch of the elbow, a perforated, substantially frusto-conical mem- I ber mounted in the vertical branch of the elbow above the nozzles for atomizing and mixlngair, fuel and exhaust gases.

lit

4. A carburetor for an internal combustion engine comprising a casing for the reception of water, a float operated valve for controlling the flow of the water into the casing, an elbow in the lower portion of the casing having a vertically disposed branch spaced concentrically from the side walls of the casing and terminating in an intermediate portion of said casing, said elbow further having a horizontally disposed branch communicating with the atmosphere and constituting an air intake for the carburetor, a pipe for connection to the intake manifold of the engine extending downwardly into the easing from the upper end thereof and having its lower end connected with the elbow, a perforated baflie plate mounted on the vertical branch of the elbow in spaced relation above the water in the casing, a boss in the lower portion of the casing having passages therein, nozzles communicating with certain of the passages and extending upwardly therefrom into the vertical branch of the elbow, valve controlled means for supplying fuel to one of the nozzles, a ipe extending downwardly into the casing f rom the upper end thereof and having its lower end submerged in the water, means for connecting the pipe to the exhaust manifold of the engine to supply exhaust gases thereto, said pipe discharging the exhaust gases into the water, another pipe having communication with the other nozzle and extending upwardly through the upper end of the casing, valve controlled means connecting the upper end of the last named pipe with the interior of the casing in a manner to receive exhaust gases from said casing and for discharging said exhaust gases through the other of the nozzles into the vertical branch of the elbow, a perforated, substantially frusto-conical member mounted in the vertical branch of the elbow above the nozzles for atomizing and mixing air, fuel and exhaust gases, the other of the passages in the boss having communication with-the fuel supply means, a throttle valve operatively mounted in the first named pipe adjacent its upper end, and

v a by-pass pipe communicating with said other passage in the boss and extending upwardly therefrom through vertical branch of the elbow and through the first named pipe to a point above the throttle valve.

In testimony whereof I afiix my signature. HARRY 

